<!DOCTYPE html>
<html lang="en">
  <head>
    <title></title>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <link href="style.css" rel="stylesheet" />
    <script src="https://unpkg.com/vue@latest"></script>
  </head>
  <body>
    <div id="app">
      <h1 class="red-text">Demo</h1>

      <select>
        <option value="red-text">Red</option>
        <option value="blue-text">Blue</option>
      </select>
    </div>
  </body>

  <script>
    const app = {
      data() {
        return {
          textColor: "red-text",
        };
      },
    };

    Vue.createApp(app).mount("#app");
  </script>
</html>
